Statistics and research results indicate that the population is declining in Iran. This is a different reason. The variation in fertility is important. This has an effect on the economic, social, demographic and political and many consequences. The purpose of this paper is to identify the factors affecting fertility that as social interaction among women. This study is based on survey data in the sample of 300 married women in Tehran. The results showed that there was a significant relationship between "individualism, body management, intimacy between couples, gender equality, positive attitude to the child, the child's negative attitude, community involvement, social support, reproductive politics, government, media consumption" with three levels of fertility (behavior, ideals and aspirations of fertility).